Why do extension methods not work with namespace aliasing?

Question

This may be an ignorant question, but I\'m unsure why I can not use namespace aliasing and extension methods together.

The following example works just fine:

Answer 1

Make sure to still add a non-aliased using statement:

Program.cs

using System;
using ExtensionMethodTest.Domain; //DON'T FORGET A NON-ALIASED USING
using MyDomain = ExtensionMethodTest.Domain;

namespace ExtensionMethodTest
{
    class Program
    {
        static void Main(string[] args)
        {
            var m = new MyDomain.MyClass();
            var result = m.UpperCaseName();
        }
    }
}

MyClass.cs

using System;

namespace ExtensionMethodTest.Domain
{
    public class MyClass
    {
        public string Name { get; set; }
    }
}

MyClassExtensions.cs

using System;

namespace ExtensionMethodTest.Domain
{
    public static class MyClassExtensions
    {
        public static string UpperCaseName (this MyClass myClass)
        {
            return myClass.Name.ToUpper();
        }
    }
}